I’m trying to setup automated lightmap builds for my project as part of our TeamCity build process. The project successfully uses RunUAT to perform build/cook operations, but I haven’t been able to get any approach for building lighting to work.
LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap
LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
I’ve reproduced these problems in a completely blank project, created in UE 4.21.2.
This is the log output from the build machine, running UE4Editor.exe with the arguments allowcommandletrendering, run=resavepackages and buildlighting.
E: Step 2/5: Build Lightmap Test (Command Line) (7s)
: [Step 2/5] Starting: C:\UE4\UE_4.21\Engine\Binaries\Win64\UE4Editor.exe D:\TeamCity-BuildAgent-2\work\a810b588373951b6\BuildTest.uproject -run=resavepackages -buildlighting -mapsonly -projectonly -allowcommandletrendering -messaging -map=NewMap
: [Step 2/5] in directory: D:\TeamCity-BuildAgent-2\work\a810b588373951b6
: [Step 2/5] [2019.05.08-01.59.38:140][ 0]LogStreaming: Display: Took 0.333s to InitEngineTextLocalization.
: [Step 2/5] [2019.05.08-01.59.38:579][ 0]LogTemp: Display: Loaded TP AllDesktopTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:589][ 0]LogTemp: Display: Loaded TP MacClientTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:599][ 0]LogTemp: Display: Loaded TP MacNoEditorTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:610][ 0]LogTemp: Display: Loaded TP MacServerTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:621][ 0]LogTemp: Display: Loaded TP MacTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:631][ 0]LogTemp: Display: Loaded TP WindowsClientTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:642][ 0]LogTemp: Display: Loaded TP WindowsNoEditorTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:652][ 0]LogTemp: Display: Loaded TP WindowsServerTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:658][ 0]LogTemp: Display: Loaded TP WindowsTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:716][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:717][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:718][ 0]LogTemp: Display: Loaded TP HTML5TargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:773][ 0]LogTemp: Display: Loaded TP IOSTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:773][ 0]LogTemp: Display: Loaded TP IOSTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:791][ 0]LogTemp: Display: Loaded TP TVOSTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:791][ 0]LogTemp: Display: Loaded TP TVOSTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:801][ 0]LogTemp: Display: Loaded TP LinuxClientTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:811][ 0]LogTemp: Display: Loaded TP LinuxNoEditorTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:821][ 0]LogTemp: Display: Loaded TP LinuxServerTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:830][ 0]LogTemp: Display: Loaded TP LinuxTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:867][ 0]LogTemp: Display: Loaded TP LuminTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:868][ 0]LogTemp: Display: Loaded TP LuminTargetPlatform
: [Step 2/5] [2019.05.08-01.59.38:868][ 0]LogTargetPlatformManager: Display: Building Assets For Windows
: [Step 2/5] [2019.05.08-01.59.38:923][ 0]LogShaderCompilers: Display: Using XGE Shader Compiler (Interception Interface).
: [Step 2/5] [2019.05.08-01.59.39:385][ 0]LogDerivedDataCache: Display: Max Cache Size: 512 MB
: [Step 2/5] [2019.05.08-01.59.39:415][ 0]LogDerivedDataCache: Display: Loaded Boot cache: C:/Windows/system32/config/systemprofile/AppData/Local/UnrealEngine/4.21/DerivedDataCache/Boot.ddc
: [Step 2/5] [2019.05.08-01.59.39:429][ 0]LogDerivedDataCache: Display: Pak cache opened for reading ../../../Engine/DerivedDataCache/Compressed.ddp.
: [Step 2/5] [2019.05.08-01.59.40:727][ 0]LogGameplayTags: Display: UGameplayTagsManager::DoneAddingNativeTags. DelegateIsBound: 0
: [Step 2/5] [2019.05.08-01.59.40:867][ 0]LogContentCommandlet: Display: Loading D:/TeamCity-BuildAgent-2/work/a810b588373951b6/Content/Maps/NewMap.umap
: [Step 2/5] [2019.05.08-01.59.41:081][ 0]LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap
: [Step 2/5] [2019.05.08-01.59.41:081][ 0]LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogContentCommandlet: Display: [REPORT] 1/1 packages required resaving
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogInit: Display:
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogInit: Display: Warning/Error Summary (Unique only)
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogInit: Display: -----------------------------------
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogInit: Display: LogContentCommandlet: Error: [REPORT] Failed building lighting for /Game/Maps/NewMap
: [Step 2/5] [2019.05.08-01.59.41:142][ 0]LogInit: Display: LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
: [Step 2/5] [2019.05.08-01.59.41:143][ 0]LogInit: Display:
: [Step 2/5] [2019.05.08-01.59.41:143][ 0]LogInit: Display: Failure - 1 error(s), 1 warning(s)
: [Step 2/5] [2019.05.08-01.59.41:143][ 0]LogInit: Display:
: [Step 2/5]
: [Step 2/5] Execution of commandlet took: 0.33 seconds
: [Step 2/5] [2019.05.08-01.59.41:399][ 0]LogShaderCompilers: Display: Shaders left to compile 0
W: [Step 2/5] Process exited with code 1
E: [Step 2/5] Process exited with code 1 (Step: Build Lightmap Test (Command Line))
E: [Step 2/5] Step Build Lightmap Test (Command Line) failed
At the same time as this, the Swarm agent log on the build server produces this log.
11:59:41 AM: [Interface:TryOpenConnection] Local connection established
11:59:41 AM: [Interface:OpenJob] Error: Value cannot be null.
Parameter name: value
11:59:41 AM: [MaintainConnections] Detected dropped local connection, cleaning up (245E4B58)
11:59:41 AM: [CloseConnection] Closing connection 245E4B58 using handle 245E4B58
11:59:41 AM: [CloseConnection] Connection confirmed for disconnection 245E4B58
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [CloseConnection] Closing orphaned Job ()
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [PostJobStatsToDB] Database error:
11:59:41 AM: [PostJobStatsToDB] Object reference not set to an instance of an object.
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [FlushMessageQueue] Draining message queue for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock acquired for 245E4B58
11:59:41 AM: [FlushMessageQueue] Lock released for 245E4B58
11:59:41 AM: [CloseConnection] Connection disconnected 245E4B58
11:59:41 AM: [FlushMessageQueue] Drain complete for 245E4B58
11:59:41 AM: [GetMessage] Safely returning to 245E4B58 with no message
11:59:41 AM: [MaintainConnections] Local connection has closed (245E4B58)
11:59:41 AM: [MaintainConnections] Removed connection 245E4B58
11:59:41 AM: [MaintainConnections] All connections have closed
I have also tried using RunUAT directly with the RebuildLightmaps argument, but it just complains about me not using P4
Running AutomationTool...
Parsing command line: RebuildLightmaps
WARNING: Command RebuildLightMaps requires P4 functionality.
WARNING: P4PORT is not set. Using perforce:1666
Perforce client error:
Connect to server failed; check $P4PORT.
TCP connect to perforce:1666 failed.
No such host is known.
ERROR: Perforce command failed: Perforce client error:
Connect to server failed; check $P4PORT.
TCP connect to perforce:1666 failed.
No such host is known.
. Please make sure your P4PORT or uebp_PORT is set properly.
(see C:\UE4\UE_4.21\Engine\Programs\AutomationTool\Saved\Logs\Log.txt for full exception trace)